A statistically based answer: Pre-heating is unlikely as it doesn't kick in until well below freezing. If it is coming on when it shouldn't, then you should see the tell-tale on the dash. Leaking injector is possible, though the injectors on the 1.6 diesel are far more reliable than those in the 2.0 diesel.
4. Citroen C4 Picasso Mk1 – noisy or juddering brakes. When test driving be sure to give the brakes a good testing. Get some heat into the discs by braking hard at speed where safe to do so, such as a roundabout after a dual carriageway, and listen for any grumbling from the rear brakes, or juddering through the pedal and steering wheel.
Follow the sections you see, it will start by calibrating the position of the gears, followed by the power need for the clutch. When the calibration of the "pull position" (not shure what it's called in English), keep the Lexia connected! Start the engine and let it get warm (over 70 deg Celsius).
Before paying out money though to reset your power folding mirrors, you should try to reset them yourself. For some power folding mirrors, all you have to do to reset them is to use the buttons on your vehicle and fold the mirrors all the way in and then back out. The controls you need are a little button that you push to the left or the right
Una vez cambiado el aceite y filtros tenemos que poner a 0 el contador de kilómetros y tiempo hasta el próximo mantenimiento. En este vídeo podrás ver como s . 243 427 391 0 432 18 172 360

citroen c4 grand picasso hard reset